Improving pH control mitigates corrosion in crude units
Equipment and pipe failures can be avoided through better desalting practices and inhibitor injections
For crude-unit overhead systems, pH is the main process parameter that impacts corrosion rates. To control corrosion conditions, many operators use various neutralizers at optimum ranges determined by site-specific conditions. A four-year study (20052008) was conducted at a Petrobras refinery using amine-blend solutions to control pH. Over this period, corrosion rates were measured through ultrasonic inspections and weight-loss coupons. Important process parameters monitored included:
pH, chloride and iron concentrations at the bottom of the overhead drum
Neutralizer and inhibitor flowrates.
A qualitative comparison was done with two refineries, using two o
From the Archive
Sign up to Receive Our Newsletter
Construction Boxscore: Project Spotlight
Bear Head LNG Export Terminal Project
Richmond County, Nova Scotia
Liquefied Natural Gas Ltd.